Hadith 343
It is narrated from Hazrat Salim bin Abdullah that Sayyiduna Abdullah bin Umar (may Allah be pleased with them) used to say: I perform shortened (qasr) prayer as long as I do not intend to settle, even if I stay for twelve nights.
Hadith 344
وَحَدَّثَنِي ، عَنْ وَحَدَّثَنِي ، عَنْ مَالِك ، عَنْ
نَافِعٍ ، أَنَّ
ابْنَ عُمَرَ " أَقَامَ بِمَكَّةَ عَشْرَ لَيَالٍ يَقْصُرُ الصَّلَاةَ إِلَّا أَنْ يُصَلِّيَهَا مَعَ الْإِمَامِ فَيُصَلِّيهَا بِصَلَاتِهِ "
It is narrated from Nafi‘ that Sayyiduna Ibn ‘Umar (may Allah be pleased with them both) stayed in Makkah for ten nights and continued to shorten the prayer, but when he prayed behind the Imam, he would perform the full prayer.