Sunan and manners about shaking hands

Firstly, two blessed sayings of the Beloved Mustafa صَلَّى اللهُ تَعَالٰى عَلَيْهِ وَاٰلِهٖ وَسَلَّم:

1.         When two Muslims shake hands while meeting and ask each other about their well-being, Allah عَزَّوَجَلَّ sends down a hundred mercies between them, of which ninety nine mercies are for the one who meets the other more warmly and asks about the well-being of his brother in a more beautiful manner. (Al-Mu’jam-ul-Awsat, vol. 5, pp. 380, Raqm 7672)

2.         When two friends meet, shake hands, and recite Salat upon the Noble Prophet صَلَّى اللهُ تَعَالٰى عَلَيْهِ وَاٰلِهٖ وَسَلَّم, their past and future sins are forgiven before they separate. (Shu’ab-ul-Iman lil-Bayhaqi, vol. 6, pp. 471, Hadees 8944)

3.         When two Muslims meet, it is Sunnah for them to shake hands using both hands after saying Salam.

4.         Say Salam when leaving as well. You may also shake hands.

5.         While shaking hands; if possible, recite the following Du’a as well after reciting Salat-‘Alan-Nabi:

یَغْفِرُ  اللّٰہُ  لَـنَا  وَ لَـکُمْ

May Allah عَزَّوَجَلَّ forgive me and you.

6.         The Du’a that two Muslims make while shaking hands will اِنْ شَــآءَالـلّٰـه عَزَّوَجَلَّ be answered and both will be forgiven before their hands are separated, اِنْ شَــآءَالـلّٰـه عَزَّوَجَلَّ. (Musnad Imam Ahmad Bin Hanbal, vol. 4, pp. 286, Hadees 12454)

7.         Shaking hands with each other removes enmity.

8.         You can shake hands every time you meet.

9.         It is not Sunnah for both to just shake hands by using one hand each. The Sunnah is to use both hands for a handshake.

10.      Some people just touch their fingers; this is not the Sunnah either.