Niyaaz in Shehrullah

I wanted to do niyaaz in Shehrullah and placed the potential niyaaz amount as Qardan Hasana in Husain Scheme for a period ending in the following Shehrullah. I was of the opinion that once Sherullah came, I would withdraw the Qardan Hasana amount and utilise it for niyaaz as per my niyyat. Sherullah arrived and I performed niyaaz. But to my astonishment, such was the turn of events, that Idid not have to withdraw even a single penny from the Qardan Hasana amount I had placed in Husain Scheme. How can this be explained? It is definitely manifold barakat of giving Qardan Hasana.