"And We have sent the winds as fertilizers," meaning: for the clouds, according to the interpretation of Qatadah.
Muhammad said: The meaning is that they strike the clouds until they release rain, and the singular of 'lawāqiḥ' (fertilizers) is...
﴿وَأَرْسَلْنَا الرِّيَاح لَوَاقِح﴾ يَعْنِي: لِلسَّحَابِ؛ فِي تَفْسِيرِ قَتَادَةَ.
قَالَ محمدٌ: الْمَعْنَى: أَنَّهَا تَضْرِبُ السَّحَابَ حَتَّى تُمْطِرَ، وَوَاحَدَةُ اللَّوَاقِحِ
