umar radhiallahu anhu use to force himself to cohabit (i cudnt find a better word :hiding
with his wives at times when he felt no desire whilst making the dua' " oh Allah bestow upon me a son who will glorify you"
SOURCE: Seerah of Umar - Anwar Al-Awlaki
Explenation: Allah grants lives, and Allah takes care of them for those who have Tawwaqul, it might seem like your not financially fit etc to take care of so many but then who knows where Allah will give rizq from.