[Machine] The Messenger of Allah ﷺ said, "There are three obligations upon me, and they are optional for you: the offering of the sacrifice, the Witr prayer, and the two Rak'ahs of the Duha prayer." Abu Janab al-Kalbi, whose name was Yahya ibn Abi Hayah, is a weak narrator. However, Yazid ibn Harun considered him truthful and accused him of deception.
أَنَّ رَسُولَ اللهِ ﷺ قَالَ ثَلَاثٌ هُنَّ عَلَيَّ فَرَائِضُ وَهُنَّ لَكُمْ تَطَوُّعٌ النَّحْرُ وَالْوِتْرُ وَرَكْعَتَا الضُّحَى أَبُو جَنَابٍ الْكَلْبِيُّ اسْمُهُ يَحْيَى بْنُ أَبِي حَيَّةَ ضَعِيفٌ وَكَانَ يَزِيدُ بْنُ هَارُونَ يُصَدِّقُهُ وَيَرْمِيهِ بِالتَّدْلِيسِ