It is recommended that while saying tashahhud, one should sit with his weight placed on his left thigh and place the front of his right foot on the sole of his left; and before tashahhud, he should say: اَلْحَمْدُ لِلّٰهِ alḥamdu lillāh...or he should say: بِسْمِ اللهِ وَبِاللهِ وَالْحَمْدُ لِلّٰهِ وَخَيْرُ الْأَسْمَاءِ لِلّٰهِ bismil lāhi wa billāh, wal ḥamdu lillāh, wa khayrul asmāʾi lillāh In the name of Allah and by Allah. All praise is for Allah, and the best names belong to Allah.
It is also recommended that one place his hands on his thighs, close his fingers together, look at his lap, and say after reciting ṣalawāt in tashahhud: وَتَقَبَّلْ شَفَاعَـتَهُ وَٱرْفَعْ دَرَجَتَهُ wa taqabbal shafāʿatahu war faʿ darajatah And accept his [i.e. the Prophet’s] intercession and raise his rank.