Muwatta Malik · Hadith 336

حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ إِذَا خَرَجَ حَاجًّا أَوْ مُعْتَمِرًا قَصَرَ الصَّلاَةَ بِذِي الْحُلَيْفَةِ ‏.‏

Yahya related to me from Malik from Nafi that Abdullah ibn Umar, shortened the prayer when he left for hajj or umra at Dhu'l Hulayfa

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