Narrated Rab'iah b. Ka'b al-Aslami:

I used to live with the Messenger of Allah ﷺ at night. I would bring water for his ablution and his need. He asked: Ask me. I said: Your company in Paradise. He said: Is there anything other than that ? I said: It is only that. He said: Help me for yourself by making prostrations abundantly.

حَدَّثَنَا هِشَامُ بْنُ عَمَّارٍ، حَدَّثَنَا الْهِقْلُ بْنُ زِيَادٍ السَّكْسَكِيُّ، حَدَّثَنَا الأَوْزَاعِيُّ، عَنْ يَحْيَى بْنِ أَبِي كَثِيرٍ، عَنْ أَبِي سَلَمَةَ، قَالَ سَمِعْتُ رَبِيعَةَ بْنَ كَعْبٍ الأَسْلَمِيَّ، يَقُولُ : كُنْتُ أَبِيتُ مَعَ رَسُولِ اللَّهِ ﷺ آتِيهِ بِوَضُوئِهِ وَبِحَاجَتِهِ، فَقَالَ : " سَلْنِي " . فَقُلْتُ : مُرَافَقَتَكَ فِي الْجَنَّةِ . قَالَ : " أَوَغَيْرَ ذَلِكَ " . قُلْتُ : هُوَ ذَاكَ . قَالَ : " فَأَعِنِّي عَلَى نَفْسِكَ بِكَثْرَةِ السُّجُودِ " .