The Prophet ﷺ offered a two rak'ã prayer after his seven rounds (of Tawaf of the Ka'bah)

وَقَالَ نَافِعٌ كَانَ ابْنُ عُمَرَ رَضِيَ اللَّهُ عَنْهُمَا يُصَلِّي لِكُلِّ سُبُوعٍ رَكْعَتَيْنِ. وَقَالَ إِسْمَاعِيلُ بْنُ أُمَيَّةَ قُلْتُ لِلزُّهْرِيِّ إِنَّ عَطَاءً يَقُولُ تُجْزِئُهُ الْمَكْتُوبَةُ مِنْ رَكْعَتَيِ الطَّوَافِ. فَقَالَ السُّنَّةُ أَفْضَلُ، لَمْ يَطُفِ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ سُبُوعًا قَطُّ إِلاَّ صَلَّى رَكْعَتَيْنِ.Narrated Nafi': Ibn 'Umar (ra) used to offer a two Rak'a prayer after every seven rounds. And Ismã'il bin Umaiyya said, "I told Az-Zuhri that 'Atã' said, 'The compulsory Salat (prayer) dispenses with the two Rak'a prayer of Tawaf' Az-Zuhri said, 'It is better to follow legal way (of the Prophet ﷺ). The Prophet ﷺ never performed seven rounds of Tawaf but offered a two Rak'a prayer (after them)'."