Hadith Number 040. Narrated by Nafi: When Abdullah bin 'Umar (Radhi Allahu Anhuma) set out for Makkah with the intentions performing 'Umrah in the period of afflictions, he said, "If I should be prevented from reaching the Ka'bah, then I would do the same as we did while in the company of Allah's Messenger (Sallallahu Alayhi wa Sallam)." So, he assumed the Ihram for 'Umrah since the Prophet had assumed the Ihram for 'Umrah in the year of Al-Hudaibiyah. Then 'Abdullah bin 'Umar (Radhi Allahu Anhuma) thought about it and said, "The conditions for both Hajj and 'Umrah are similar." He then turned towards his companions and said, "The conditions of both Hajj and 'Umrah are similar and I make you witnesses that I have made the performance of Hajj obligatory for myself along with 'Umrah." He then performed one Tawaf (between As-Safa and Al-Marwah) for both of them (i.e. Hajj and ('Umrah) and considered that to be sufficient for him and offered a Hadi.
Hadith Number 041. Narrated by 'Abdur-Rahman bin Abu Layla: Ka'b bin 'Ujra (Radhi Allahu Anhu) said that Allah's Messenger (Sallallahu Alayhi wa Sallam) said to him (Ka'b), "Perhaps your lice have troubled you?" Ka'b replied, "Yes! O Allah's Messenger." Allah's Messenger (Sallallahu Alayhi wa Sallam) said, "Have your head shaved and then either fast three days or feed six poor persons or slaughter one sheep as a sacrifice."
Hadith Number 042. Narrated by Ka'b bin 'Umrah (Radhi Allahu Anhu): Allah's Messenger (Sallallahu Alayhi wa Sallam) stood beside me at Al-Hudaibiyah and the lice were falling from my head in great number. He asked me, "Have your lice troubled you?" I replied in the affirmative. He ordered me to get my head shaved. Ka'b added, "This Holy Verse:
'And if any of you is ill, or has ailment in his scalp (Surah Al-Baqarah 2:196), etc. was revealed regarding me. "The Prophet (Sallallahu Alayhi wa Sallam) then ordered me either to fast three days, or to feed six poor persons with one Faraq (three Sas) (of dates), or to slaughter a sheep, etc (sacrifice) whatever was available.
Hadith Number 043. Narrated by 'Abdullah bin Ma'qal: I sat with Ka'b bin 'Ujra (Radhi Allahu Anhu) and asked him about the Fidya. He replied, "This revelation was revealed concerning my case especially, but it is also for you in general. I was carried to Allah's Messenger (Sallallahu Alayhi wa Sallam) and the lice were falling in great number on my face. The Prophet said, "I have never thought that your ailment (or struggle) has reached to such an extent as I see. Can you afford a sheep?" I replied in the negative. He then said, "Fast for three days, or feed six poor persons each with half a Sa of food." (1 Sa = 3 Kilograms approx.)
Hadith Number 044. Narrated by Abdur-Rahman bin Abu Layla: (Reporting the speech of Ka'b bin Umrah) Allah's Messenger (Sallallahu Alayhi wa Sallam) saw him (i.e. Ka'b) while the lice were falling on his face. He asked (him), "Have your lice troubled you?" He replied in the affirmative. So, he ordered him to get his head shaved while he was at Al-Hudaibiyah. At that time they were not permitted to finish their Ihram, and were still hoping to enter Makkah.
(*) So, Allah revealed the verses of Al-Fidya. Allah's Messenger (Sallallahu Alayhi wa Sallam) ordered him to feed six poor persons with one Faraq of food or to slaughter one sheep (as a sacrifice) or to fast for three days.
* Ka’b (Radhi Allahu Anhu) was permitted to finish his Ihram because of an ailment in his head and had to pay Fidya, (compensation), although later on, all the Companions (Radhi Allahu Anhum) finished Ihram because they ere prevented from reaching the Ka’bah. Hadith Number 045. Narrated by Abu Hurairah (Radhi Allahu Anhu): Allah's Messenger (Sallallahu Alayhi wa Sallam) said, "Whoever performs Hajj to this House (Ka'bah) and does not approach his wife for sexual relations nor commits sins (while performing Hajj), he will come out as sinless as a newly-born child. (Just delivered by his mother)."
Hadith Number 046. Narrated by Abu Hurairah (Radhi Allahu Anhu): The Prophet (Sallallahu Alayhi wa Sallam) said, "Whoever performs Hajj to this Ka'bah and does not approach his wife for sexual relations nor commit sins (while performing Hajj), he will come out as sinless as a new-born child, (just delivered by his mother)."