Muhammad b. ‘All b. Husain quoted ‘Ali b. Abu Talib as saying that God’s messenger sacrificed a sheep on the seventh day for al-Hasan and said, “Shave his head, Fatima, and give the weight of his hair in silver as <i>sadaqa</i>.” So they weighed it and it amounted to a dirham or part of a dirham. Tirmidhi transmitted it, saying this is a <i>hasan gharib</i> tradition, but its <i>isnad</i> is not fully connected because Muhammad b. ‘Ali b. Husain was not born in the time of ‘Ali b. Abu Talib.

وَعَنْ مُحَمَّدِ بْنِ عَلِيِّ بْنِ حُسَيْنٍ عَنْ عَليّ بن أبي طَالب قَالَ: عَقَّ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عَنِ الْحَسَنِ بِشَاةٍ وَقَالَ: «يَا فَاطِمَةُ احْلِقِي رَأْسَهُ وَتَصَدَّقِي بِزِنَةِ شَعْرِهِ فِضَّةً» فَوَزَنَّاهُ فَكَانَ وَزْنُهُ دِرْهَمًا أَوْ بَعْضَ دِرْهَمٍ. رَوَاهُ التِّرْمِذِيُّ وَقَالَ: هَذَا حَدِيثٌ حَسَنٌ غَرِيبٌ وَإِسْنَادُهُ لَيْسَ بِمُتَّصِلٍ لِأَنَّ مُحَمَّدَ بْنَ عَلِيِّ بْنِ حُسَيْنٍ لَمْ يُدْرِكْ عَلِيَّ بْنَ أَبِي طَالِبٍ