Narrated Imran ibn Husayn:

A man came to the Prophet ﷺ and said: Peace be upon you! He responded to his salutation. He then sat down. The Prophet ﷺ said: Ten. Another man came and said: Peace and Allah's mercy be upon you! He responded to his salutation when he sat down. He said: Twenty. Another man came and said: Peace and Allah's mercy and blessings be upon you! He responded to him and said when he sat down: and blessings be upon you! He responded to him and said when he sat down: Thirty.

حَدَّثَنَا مُحَمَّدُ بْنُ كَثِيرٍ، أَخْبَرَنَا جَعْفَرُ بْنُ سُلَيْمَانَ، عَنْ عَوْفٍ، عَنْ أَبِي رَجَاءٍ، عَنْ عِمْرَانَ بْنِ حُصَيْنٍ، قَالَ جَاءَ رَجُلٌ إِلَى النَّبِيِّ ﷺ فَقَالَ السَّلاَمُ عَلَيْكُمْ . فَرَدَّ عَلَيْهِ السَّلاَمَ ثُمَّ جَلَسَ فَقَالَ النَّبِيُّ ﷺ " عَشْرٌ " . ثُمَّ جَاءَ آخَرُ فَقَالَ السَّلاَمُ عَلَيْكُمْ وَرَحْمَةُ اللَّهِ . فَرَدَّ عَلَيْهِ فَجَلَسَ فَقَالَ " عِشْرُونَ " . ثُمَّ جَاءَ آخَرُ فَقَالَ السَّلاَمُ عَلَيْكُمْ وَرَحْمَةُ اللَّهِ وَبَرَكَاتُهُ . فَرَدَّ عَلَيْهِ فَجَلَسَ فَقَالَ " ثَلاَثُونَ " .