Mishkat al-Masabih
Mishkat al-Masabih 1146
وَعَن أبي سعيد الْخُدْرِيّ قَالَ: جَاءَ رَجُلٌ وَقَدْ صَلَّى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ: «أَلَا رَجُلٌ يَتَصَدَّقُ عَلَى هَذَا فَيُصَلِّيَ مَعَهُ؟» فَقَامَ رَجُلٌ فيصلى مَعَه ". رَوَاهُ التِّرْمِذِيّ وَأَبُو دَاوُد
Unreviewed translation. All hadiths in this collection are available in five languages. Titles and introductions may remain in Arabic.
Abu Said al-Khudri said: A man came after the Messenger of God, peace and blessings be upon him, had prayed. He said: Is there no one who will give charity to this man by praying with him? A man stood and prayed with him. Al-Tirmidhi and Abu Dawud transmitted it.
Notes and open questions — unreviewed
The wording “give charity” is retained from the Arabic; in this context it refers to joining the man in prayer.