Ameen Yusef al-Domeiry was an alleged member of Egyptian Islamic Jihad.
He was recruited by Ayman al-Zawahiri around 1979-80.
A pharmacist by trade, he used the revenues from his business to support the group, and offered religious lessons. When Abbud al-Zumar hid from police, al-Domeiry found him an apartment, hid explosives for him, and gave him EGP800.
References
Ameen Yusef al-Domeiry Wikipedia(Text) CC BY-SA