Answer
(Fatwa: 751/751/M=1432)
You should completely follow the etiquettes and conditions of the dua narrated for the acceptance of dua, then it is hoped that the dua shall be accepted i.e. the livelihood, food, drink and clothes should be halal. Dua should be made beseeching and cryingly with full attention. In the beginning and ending, one should praise Almighty Allah and recite durood on the holy Prophet Muhammad (صلى الله عليه وسلم). There are other etiquettes as well. For detail see the booklet “Ahkam o Fazail Dua” by Hadhrat Mufti Shafee (رحمة الله عليه). This booklet is published with the first volume of Jawahir al-Fiqh.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband