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. (Using translation from Abū Dāʾūd 5195)   

كُنَّا عِنْدَ رَسُولِ اللهِ ﷺ فَجَاءَ رَجُلٌ فَسَلَّمَ فَقَالَ السَّلَامُ عَلَيْكُمْ فَرَدَّ عَلَيْهِ رَسُولُ اللهِ ﷺ فَقَالَ «عَشْرٌ» ثُمَّ جَلَسَ ثُمَّ جَاءَ آخَرُ فَقَالَ السَّلَامُ عَلَيْكُمْ وَرَحْمَةُ اللهِ فَرَدَّ عَلَيْهِ رَسُولُ اللهِ ﷺ وَقَالَ «عِشْرُونَ» ثُمَّ جَلَسَ ثُمَّ جَاءَ آخَرُ فَقَالَ السَّلَامُ عَلَيْكُمْ وَرَحْمَةُ اللهِ وَبَرَكَاتُهُ فَرَدَّ عَلَيْهِ رَسُولُ اللهِ ﷺ وَقَالَ «ثَلَاثُونَ»