Muwatta Malik · Hadith 483

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ، أَنَّهُ قَالَ رَأَيْتُ عَبْدَ اللَّهِ بْنَ عُمَرَ يَسْجُدُ فِي سُورَةِ الْحَجِّ سَجْدَتَيْنِ ‏.‏

Yahya related to me from Malik that Abdullah ibn Dinar said, "I saw Abdullah ibn Umar prostrate twice in Surat al-Hajj (Sura)

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).