What happens to the mīm sākinah in «أَطْعَمَهُمْ مِنْ»?

Al-Fīl and Quraysh: Applied Iẓhār, Ikhfāʾ, Idghām, Madd and Waqf

• Iẓhār shafawī
• Ikhfāʾ shafawī
• Madd ʿāriḍ
• Idghām shafawī with ghunnah