The spreading of the penis does not invalidate the ablution
Machine translationRead the Arabic original
The second question of the fatwa number ( 8885 )
Q2: A man is praying when his penis becomes erect, but nothing comes out. Does this invalidate the ablution? If it does invalidate it and he has not yet completed his prayer, should he break off his prayer or complete it?
A2: Praise be to Allah alone, and blessings and peace be upon His Messenger, his family, and his Companions... And to proceed: The ablution is not invalidated by the erection of the penis if nothing comes out of it; because the erection is not among the things that invalidate the ablution, and the prayer is valid, so he should complete it. And success is from Allah, and may Allah send blessings and peace upon our Prophet Muhammad, his family, and his Companions.
Source
www.alifta.gov.sa
The Arabic text is copied verbatim from the original source, without any edits.