It was narrated that Jabir bin ‘Abdullah said: “The Messenger of Allah (ﷺ) passed by a man who was praying on a rock, and he went towards Makkah and stayed a while, then he left and found the man still praying as he had been. He stood up and clasped his hands, then said: “O people, you should observe moderation,” three times, “for Allah does not get tired (of giving reward) but you get tired.”
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا عَمْرُو بْنُ رَافِعٍ، حَدَّثَنَا يَعْقُوبُ بْنُ عَبْدِ اللَّهِ الأَشْعَرِيُّ، عَنْ عِيسَى بْنِ جَارِيَةَ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، قَالَ : مَرَّ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ عَلَى رَجُلٍ يُصَلِّي عَلَى صَخْرَةٍ فَأَتَى نَاحِيَةَ مَكَّةَ فَمَكَثَ مَلِيًّا ثُمَّ انْصَرَفَ فَوَجَدَ الرَّجُلَ يُصَلِّي عَلَى حَالِهِ فَقَامَ فَجَمَعَ يَدَيْهِ ثُمَّ قَالَ : " يَا أَيُّهَا النَّاسُ عَلَيْكُمْ بِالْقَصْدِ " . ثَلاَثًا : " فَإِنَّ اللَّهَ لاَ يَمَلُّ حَتَّى تَمَلُّوا " .
sunnah.com