It is Mustahab that in the prayer of Tawaf the pilgrim recites “Tawhid Sura” after the Hamd in the first Rak'at and “Sura of قل یا ایها الکافرون” in the second Rak'at, and praises and thanks Allah after the prayer and send Salawat for Mohammad (s.a.) and his dynasty (a.s.) and ask Allah for acceptance and it has been mentioned in some of cabbalas that Imam Sadiq (a.s.) prostrated after the prayer of Tawaf and said:

سَجَدَ لَکَ وَجْهِی تَعَبُّداً وَرِقّاً، لااِلهَ اِلاّ اَنْتَ حَقّاً حَقّاً، أَلاَْوَّلُ قَبْلَ کُلِّ شَىْء، وَ الاْخِرُ بَعْدَ کُلِّ شَىْء، وَ ه اَنَا ذابَیْنَ یَدَیکَ ناصِیَتِی بِیَدِکَ، فَاغْفِرْلِی، اِنَّهُ لایَغْفِرُ الذَّنْبَ الْعَظِیمَ غَیْرُکَ، فَاغْفِرْلِی، فَإنِّی مُقِرٌّ بِذُنُوبِی عَلى نَفْسِی، وَ لایَدْفَعُ الذَّنْبَ الْعَظِیمَ غَیْرُکَ

And after prostration the face of his holiness were wet of tears.

And it is also Mustahab that after the prayer of Tawaf and before Sa’y the pilgrim goes to Zamzam well and pour some water on his/her head and back and abdomen and says:

اللَّهُمَّ اجْعَلْهُ عِلْماً نَافِعاً وَ رِزقاً واسِعاً وَ شِفاءً مِنْ کُلِّ داء وَ سُقْم