Is it permissible to perform Tayammum for prayer, when there is a concern that its time might elapse, due to masturbation?

The questioner must repent of the sin mentioned, understand its danger, and how to remedy it. If he fears missing the necessary prayer time and is unable to perform ghusl, he should pray with tayammum. However, if there is an opportunity to perform ghusl, tayammum is not valid, even if it leads to delaying the prayer beyond its initial time or missing the congregational prayer.