م س سm-s-s
(س) مَسَّ يَمَسُّ مَسًّاmassa yamassu massan (original form: مَسِسَ يَمْسَسُmasisa yamsasu): to touch; (of an affliction or a condition) to befall. ﴿لَّا يَمَسُّهُۥٓ اِلَّا الْمُطَهَّرُوْنَ﴾ (Al-Wāqiʿah 56:79); ﴿وَاِذَا مَسَّ الْاِنْسَانَ الضُّرُّ دَعَانَا﴾ (Yūnus 10:12)
مِسَاسٌmisās (verbal noun, maṣdar, of Form III, bāb mufāʿalah): touching, laying hands on one another. Only once in the Quran, in the words of the Sāmirī: ﴿فَاِنَّ لَكَ فِي الْحَيٰوةِ اَنْ تَقُوْلَ لَا مِسَاسَ﴾ (Ṭā Hā 20:97)
Form VI (tafāʿul) تَمَاسَّ يَتَمَاسُّ تَمَاسًّاtamāssa yatamāssu tamāssan (original form: تَمَاسَسَtamāsasa): to touch one another; metonymically: conjugal relations. ﴿مِّنْ قَبْلِ اَنْ يَّتَمَآسَّا﴾ (Al-Mujādilah 58:3)