The nafl salat which is said for Allah for fulfillment of any particular legal need is called ‘Salatul Hajat’. For fulfillment of any legal need, the slave can pray to his lord Allah through Sabr and Salat. (i.e. patience & prayer), (Baqarah 2/153). So in separate two rak‘ats of nafl salat or in any salat in sijdah or in last sitting after Tashahhud and before Salam getting in the mind the thing of early need, will say the substantial Doa narrated below:
اَللَّهُمَّ رَبَّنَا آتِنَا فِي الدُّنْيَا حَسَنَةً وَّفِي الْآخِرَةِ حَسَنَةً وَّقِنَا عَذَابَ النَّارِ- Alla-humma Rabbana A-tina fiddunya Hasanataon wa fil A-khirati Hasanataon wa Qina ‘Aza-banna-r.
‘Oh Allah! Oh our fosterer! Give us in this world that which is good and in the life hereafter that which is good and save us from the punishment of the Hell. Anas (R) said, the prophet (sm) used to say this Doa most of the time.
Or to say, اَللَّهُمَّ آتِنَا... Alla-humma A-tina... If it is said in sijdah. As because the recitation of Quranic verses is not allowed in ruku & sijdah.
Huzaifah (R) says that, كَانَ النَّبِىُّ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ إِذَا حَزَبَهُ أَمْرٌ صَلَّى The Prophet (sm) when faces any crisis, would engage in salat’.
Here should remember the incident of ‘Sara’ the wife of Ibraheem (A), when she was kidnapped and brought to the lewd king and he comes ahead to her, then she makes ablution and engaged in salat and seeks refuge with Allah by saying اَللَّهُمَّ لاَ تُسَلِّطْ عَلَىَّ هَذَا الْكَافِرَ , ‘Oh Allah! Do not subduer this infidel to me’. Allah had responded then & there to her prayer and the limbs of that tyrant emperor got paralysed. After being failure at third time, he releases ‘Sara’ with honour and sent her to Ibraheem (A) with precious gifts and a maid servant Hajera.
. Ibnu Mazah H/1385, Ch: 2, Salat, Para:189.
. Bukhari H/4522, 6389; Do, Mishkat H/2487, Muslim, Mishkat H/813.
. Muslim, Mishkat H/873, Ch: 4, Salat, Para: 13, Ruku; Nayl 3/109.
. Abu Daud H/1319, Ch: 2, Salat, Para: 312; Saheehul Jame‘ H/4703; Do, Mishkat H/1315.
. Bukhari H/2217, Ch: 34, Business, Para: 100: Ahmad H/9230, Sanad Saheeh.