Allah said:

﴿فَإِذَآ أَمِنتُمْ فَاذْكُرُواْ اللَّهَ﴾

(And when you are in safety, then remember Allah (pray)) meaning, `Perform the prayer as I have commanded you by completing its bowing, prostration, standing, sitting, and with the required attention (in the heart) and supplication.' Allah said:

﴿كَمَا عَلَّمَكُم مَّا لَمْ تَكُونُواْ تَعْلَمُونَ﴾

(in the manner He has taught you, which you knew not (before).) meaning, just as He has endowed you, guided you and taught you about what benefits you in this life and the Hereafter, so thank and remember Him. Similarly, Allah said after He mentioned the prayer of Fear,

﴿فَإِذَا اطْمَأْنَنتُمْ فَأَقِيمُواْ الصَّلَوةَ إِنَّ الصَّلَوةَ كَانَتْ عَلَى الْمُؤْمِنِينَ كِتَـباً مَّوْقُوتاً﴾

(...but when you are free from danger, perform As-Salah. Verily, As-Salah (the prayer) is enjoined on the believers at fixed hours.) (4:103)

We will mention the Hadiths about the prayer of Fear and its description in Surat An-Nisa' while mentioning Allah's statement:

﴿وَإِذَا كُنتَ فِيهِمْ فَأَقَمْتَ لَهُمُ الصَّلَوةَ﴾

(When you (O Messenger Muhammad ) are among them, and lead them in As-Salah (the prayer).) (4:102)

﴿وَالَّذِينَ يُتَوَفَّوْنَ مِنكُمْ وَيَذَرُونَ أَزْوَجًا وَصِيَّةً لازْوَاجِهِم مَّتَـعًا إِلَى الْحَوْلِ غَيْرَ إِخْرَاجٍ فَإِنْ خَرَجْنَ فَلاَ جُنَاحَ عَلَيْكُمْ فِى مَا فَعَلْنَ فِي أَنفُسِهِنَّ مِن مَّعْرُوفٍ وَاللَّهُ عَزِيزٌ حَكِيمٌ - وَلِلْمُطَلَّقَـتِ مَتَـعٌ بِالْمَعْرُوفِ حَقًّا عَلَى الْمُتَّقِينَ - كَذَلِكَ يُبَيِّنُ اللَّهُ لَكُمْ آيَـتِهِ لَعَلَّكُمْ تَعْقِلُونَ ﴾

(240. And those of you who die and leave behind wives should bequeath for their wives a year's maintenance (and residence) without turning them out, but if they (wives) leave, there is no sin on you for that which they do of themselves, provided it is honorable (e.g., lawful marriage). And Allah is All-Mighty, All-Wise.) (241. And for divorced women, maintenance (should be provided) on reasonable (scale). This is a duty on Al-Muttaqin (the pious).) (242. Thus Allah makes clear His Ayat (Laws) to you, in order that you may understand.)