عَنْ عُمَيْرِ بْنِ إِسْحَاقَ قَالَ: كُنْتُ مَعَ الْحَسَنِ بْنِ عَلِيٍّ رَضِيَ اللَّهُ عَنْهُ فَلَقِيَنَا أَبُو هُرَيْرَةَ فَقَالَ: أَرِنِي أُقَبِّلُ مِنْكَ حَيْثُ رَأَيْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ يُقَبِّلُ فَقَالَ بِقَمِيصِهِ قَالَ فَقَبَّلَ سُرَّتَهُ
Umair bin Ishaq says that I was with Hasan bin Ali (may Allah be pleased with him), when Sayyiduna Abu Hurairah (may Allah be pleased with him) met us and said: Come here, so that I may kiss you at the place where I saw the Messenger of Allah (peace and blessings be upon him) kissing you. Then he lifted his shirt and kissed his navel.