Abdullah bin Umar reported,

He used to send the weaker members of his family ahead so they could stand at al-Mashar al-Haram in Muzdalifa during the night, where they would remember Allah as much as they wished, then return before the imam took his position and before he set out. Some of them would arrive in Mina in time for the dawn prayer, while others arrived after that. Once they arrived, they would throw pebbles at the jamrah.Ibn Umar used to say, "The Messenger of Allah ﷺ granted them this concession."

حدثنا يحيى بن بكير حدثنا الليث عن يونس عن ابن شهاب قال سالم وكان

عبد الله بن عمر رضي الله عنهما

يقدم ضعفة أهله فيقفون عند المشعر الحرام بالمزدلفة بليل فيذكرون الله ما بدا لهم ثم يرجعون قبل أن يقف الإمام وقبل أن يدفع فمنهم من يقدم منى لصلاة الفجر ومنهم من يقدم بعد ذلك فإذا قدموا رموا الجمرة وكان ابن عمر رضي الله عنهما يقول أرخص في أولئك رسول الله ﷺ