You must not do this as a habit. Try to offer the prayer earlier. However, if you prayed one Rakah before the sun began to rise, your prayer is valid.

Brother, if I regularly delay my Fajr prayer till the end of the prescribed time due to some reasons…finishing praying about 10 min before sunrise time, is this OK? Pls clarify.

Prayer | January 29, 2017 7:38 pm
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With regard to the 7 bones in prostration, is the nose a part? That is, should the nose touch or not touch the prayer mat during Sujood? Kindly explain.
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I’m trying to get over my obsessions.In Salah sometimes I keep getting thoughts that I’m not doing it right.In Sujood the middle part of one finger was not touching he ground & I started getting these thoughts & continued Salah. Then I thought I should have touched the finger to the ground. Is my Salah invalid?