(س) شَرِكَ يَشْرَكُ شِرْكًا وَشَرِكَةًsharika yashraku shirkan wa-sharikatan: to be a partner, to share.
شِرْكٌshirk (also a noun, ism dhāt): partnership; technically associating someone with Allah as a partner. ﴿اِنَّ الشِّرْكَ لَظُلْمٌ عَظِيْمٌ﴾ (Luqmān 31:13)
شَرِيْكٌsharīk pl. شُرَكَآءُshurakāʾu (adjective on the pattern of فَعِيْلٌfaʿīl): partner, sharer. ﴿فَهُمْ شُرَكَآءُ فِي الثُّلُثِ﴾ (An-Nisāʾ 4:12)
Form IV (ifʿāl) اَشْرَكَ يُشْرِكُ اِشْرَاكًاashraka yushriku ishrākan: to make a partner. ﴿اِنَّ اللّٰهَ لَا يَغْفِرُ اَنْ يُّشْرَكَ بِهِۦ﴾ (An-Nisāʾ 4:48); ﴿وَاَشْرِكْهُ فِيْٓ اَمْرِيْ﴾ (Ṭā Hā 20:32)
Form III (mufāʿalah) شَارَكَ يُشَارِكُ مُشَارَكَةًshāraka yushāriku mushārakatan: to be a partner with someone, to share. ﴿وَشَارِكْهُمْ فِي الْاَمْوَالِ وَالْاَوْلَادِ﴾ (Al-Isrāʾ 17:64)
Form VIII (iftiʿāl) اِشْتَرَكَ يَشْتَرِكُ اِشْتِرَاكًاishtaraka yashtariku ishtirākan: to take part deliberately; مُشْتَرِكٌmushtarik (active participle, ism fāʿil): one who takes part. ﴿فَاِنَّهُمْ يَوْمَئِذٍ فِي الْعَذَابِ مُشْتَرِكُوْنَ﴾ (Aṣ-Ṣāffāt 37:33)