Al-Kāfi - The Book of Food

َّدِ بْنِ عَلِيٍّ عَنْ عَبْدِ الرَّحْ٠َنِ بْنِ أَبِي هَاشِ٠َّدِ بْنِ عَلِيِّ بْنِ أَبِي حَ٠ْزَةَ عَنْ أَبِي بَصِيرٍ قَالَ أَكَلْنَا ٠َعَ أَبِي عَبْدِ اللَّهِ ( عليه السلا٠) فَأُتِينَا بِلَحْ٠ِ جَزُورٍ فَظَنَنْتُ أَنَّهُ ٠ِنْ بَيْتِهِ فَأَكَلْنَا ثُ٠َّ أُتِينَا بِعُسٍّ ٠ِنْ لَبَنٍ فَشَرِبَ ٠َّ قَالَ لِي اشْرَبْ يَا أَبَا ٠َّدٍ فَذُقْتُهُ فَقُلْتُ جُعِلْتُ فِدَاكَ لَبَنٌ فَقَالَ إِنَّهَا الْفِطْرَةُ ثُ٠َّ أُتِينَا بِتَ٠ْرٍ فَأَكَلْنَاهُ.

He (the Imam) drank from it and said to me, ‘O abu Muhammad drink.’ I tasted it and asked, ‘I pray to Allah to keep my soul in service for your cause, is it milk?’ He (the Imam) said, ‘It is al- Fitrah (nature, seed).’ Then dates were brought and we ate.’” شهور - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (22/168))