The Prophet ﷺ paid a visit to Um-Sulaim and she placed before him dates and ghee. The Prophet ﷺ said, "Replace the ghee and dates in their respective containers for I am fasting." Then he stood somewhere in her house and offered an optional prayer and then he invoked good on Um-Sulaim and her family. Then Um-Sulaim said, "O Messenger of Allah ﷺ! I have a special request (today)." He said, "What is it?" She replied, "(Please invoke for) your servant Anas." So Messenger of Allah ﷺ did not leave anything good in the world or the Hereafter which he did not invoke (Allah to bestow) on me and said, "O Allah! Give him (i.e. Anas) property and children and bless him." Thus I am one of the richest among the Ansar and my daughter Umaina told me that when Al-Hajjaj came to Basra, more than 120 of my offspring had been buried. (Using translation from Bukhārī 1982)   

دَخَلَ النَّبِيُّ ﷺ عَلَى أُمِّ سُلَيْمٍ فَأَتَتْهُ بِتَمْرٍ وَسَمْنٍ فَقَالَ «أَعِيدُوا سَمْنَكُمْ فِي سِقَائِهِ وَتَمْرَكُمْ فِي وِعَائِهِ فَإِنِّي صَائِمٌ ثُمَّ قَامَ إِلَى نَاحِيَةٍ مِنَ الْبَيْتِ فَصَلَّى صَلَاةً غَيْرَ مَكْتُوبَةٍ وَدَعَا لِأُمِّ سُلَيْمٍ وَلِأَهْلِ بَيْتِهَا» فَقَالَتْ أُمُّ سُلَيْمٍ يَا رَسُولَ اللهِ إِنَّ لِي خُوَيْصَّةً فَقَالَ «مَا هِيَهْ؟» قُلْتُ خَادِمُكَ أَنَسٌ فَمَا تَرَكَ خَيْرًا مِنْ خَيْرِ آخِرَةٍ وَلَا دُنْيَا إِلَّا دَعَا لِي ثُمَّ قَالَ «اللهُمَّ ارْزُقْهُ مَالًا وَوَلَدًا وَبَارِكْ لَهُ» قَالَ فَإِنِّي لِمَنْ أَكْثَرِ الْأَنْصَارِ مَالًا قَالَ «وَحَدَّثَتْنِي ابْنَتِي أَنَّهُ قَدْ دُفِنَ لِصُلْبِي إِلَى مَقْدَمِ الْحَجَّاجِ إِلَى الْبَصْرَةِ بِضْعٌ وَعِشْرُونَ وَمِائَةٌ»  

Messenger of Allah ﷺ passed (by our house) that my mother Umm Sulaim listened to his voice and said: Messenger of Allah, let my father and mother be sacrificed for thee, here is Unais (and requested him to invoke blessings upon me). So Messenger of Allah ﷺ invoked three blessings upon me. I have seen (the results) of the two in this very world (in regard to wealth and progeny) and I hope to see (the result) of the third one in the Hereafter. (Using translation from Muslim 2481c)  

مَرَّ رَسُولُ اللهِ ﷺ فَسَمِعَتْ أُمُّ سُلَيْمٍ صَوْتَهُ فَقَالَتْ بِأَبِي وَأُمِّي يَا رَسُولَ اللهِ أُنَيْسٌ فَدَعَا لِي رَسُولُ اللهِ ﷺ ثَلَاثَ دَعَوَاتٍ قَدْ رَأَيْتُ مِنْهَا اثْنَتَيْنِ وَأَنَا أَرْجُو الثَّالِثَةَ فِي الْآخِرَةِ