The Quran root م ط ر m-ṭ-r

وَإِذَا كُنتَ فِيهِمْ فَأَقَمْتَ لَهُمُ الصَّلَاةَ فَلْتَقُمْ طَائِفَةٌ مِّنْهُم مَّعَكَ وَلْيَأْخُذُوا أَسْلِحَتَهُمْ فَإِذَا سَجَدُوا فَلْيَكُونُوا مِن وَرَائِكُمْ وَلْتَأْتِ طَائِفَةٌ أُخْرَىٰ لَمْ يُصَلُّوا فَلْيُصَلُّوا مَعَكَ وَلْيَأْخُذُوا حِذْرَهُمْ وَأَسْلِحَتَهُمْ وَدَّ الَّذِينَ كَفَرُوا لَوْ تَغْفُلُونَ عَنْ أَسْلِحَتِكُمْ وَأَمْتِعَتِكُمْ فَيَمِيلُونَ عَلَيْكُم مَّيْلَةً وَاحِدَةً وَلَا جُنَاحَ عَلَيْكُمْ إِن كَانَ بِكُمْ أَذًى مِّن مَّطَرٍ أَوْ كُنتُم مَّرْضَىٰ أَن تَضَعُوا أَسْلِحَتَكُمْ وَخُذُوا حِذْرَكُمْ إِنَّ اللَّهَ أَعَدَّ لِلْكَافِرِينَ عَذَابًا مُّهِينًا ١٠٢

مَّطَرٍ maṭarin · rain

And when you [i.e., the commander of an army] are among them and lead them in prayer, let a group of them stand [in prayer] with you and let them carry their arms. And when they have prostrated, let them be [in position] behind you and have the other group come forward which has not [yet] prayed and let them pray with you, taking precaution and carrying their arms. Those who disbelieve wish that you would neglect your weapons and your baggage so they could come down upon you in one [single] attack. But there is no blame upon you, if you are troubled by rain or are ill, for putting down your arms, but take precaution. Indeed, Allāh has prepared for the disbelievers a humiliating punishment. (Surah An-Nisa, 4:102)

وَأَمْطَرْنَا عَلَيْهِم مَّطَرًا فَانظُرْ كَيْفَ كَانَ عَاقِبَةُ الْمُجْرِمِينَ ٨٤

مَّطَرًا maṭaran · a rain

And We rained upon them a rain [of stones]. Then see how was the end of the criminals. (Surah Al-A'raf, 7:84)

وَإِذْ قَالُوا اللَّهُمَّ إِن كَانَ هَٰذَا هُوَ الْحَقَّ مِنْ عِندِكَ فَأَمْطِرْ عَلَيْنَا حِجَارَةً مِّنَ السَّمَاءِ أَوِ ائْتِنَا بِعَذَابٍ أَلِيمٍ ٣٢

فَأَمْطِرْ fa-amṭir · then (send) rain

And [remember] when they said, "O Allāh, if this should be the truth from You, then rain down upon us stones from the sky or bring us a painful punishment." (Surah Al-Anfal, 8:32)

فَلَمَّا رَأَوْهُ عَارِضًا مُّسْتَقْبِلَ أَوْدِيَتِهِمْ قَالُوا هَٰذَا عَارِضٌ مُّمْطِرُنَا بَلْ هُوَ مَا اسْتَعْجَلْتُم بِهِ رِيحٌ فِيهَا عَذَابٌ أَلِيمٌ ٢٤

مُّمْطِرُنَا mum'ṭirunā · bringing us rain

And when they saw it as a cloud approaching their valleys, they said, "This is a cloud bringing us rain!" Rather, it is that for which you were impatient: a wind, within it a painful punishment, (Surah Al-Ahqaf, 46:24)