Salwat on Mohammad SA

[Sardar Miyan]

Salwat
 33:56
إِنَّ اللَّهَ وَمَلَائِكَتَهُ يُصَلُّونَ عَلَى النَّبِيِّ يَا أَيُّهَا الَّذِينَ آمَنُوا صَلُّوا عَلَيْهِ وَسَلِّمُوا تَسْلِيمًا
33:56
Surely Allah and His angels bless the Prophet; O you who believe! call for (Divine) blessings on him and salute him with a (becoming) salutation.
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Salam All, Bro JAI has discussed Darud Sharif in Q & As site about what one has to say in Salath. But I wanted to discuss from another angle here. What we are to say in Salawath is " Allahumma Salle Ala Mohammadin Wa Sallu Alaihi Salamu Tasleema "But some Muslims add " Wa Ahlehi , Wa Azwajhi,Wa Ashabehi "etc. I just wanted to know if one can add these persons? Is it not deviation from Allah's command? Thanks for sharing.