all, hope Ramadan is going great, inshaAllah. I was taught that when one makes dua to Allah, one can say "Ya Allah, nabi ke sadqe aur tu'fel me meri dua qubool farma". (I apologize I don't know how to translate this in english). But a few years back somebody asked me not to do that, hence I stopped. Now again I have heard people saying it. Is it permissible? And exactly what does it mean? Also, is it permissible for a family member to make dua loudly while the others say ameen?