Bulugh al-Maram 2 The Book of Prayer كتاب الصلاة 435

وَلِأَبِي دَاوُدَ: عَنْ أُبَيِّ بْنِ كَعْبٍ: { صَلَّى, فَرَكَعَ خَمْسَ رَكَعَاتٍ وَسَجَدَ سَجْدَتَيْنِ, وَفَعَلَ فِي اَلثَّانِيَةِ مِثْلَ ذَلِكَ } 1 . 1 – منكر. رواه أبو داود (1182).

Narrated Ubai bin Ka’b (RA): “He [the Prophet (صلى الله عليه وسلم)] prayed (the Eclipse prayer) and bowed five times and prostrated twice (in the first Rak’ah), and in the second Rak’a he also did the same.” [Abu Dawud]