To

    The Principal,

    S.B.S Inter College

    Mohiyapur, sector-162 Noida

Sir,

    Most respectfully I beg to say that on account of my brother's marriage on 10th September. I am unable to attend my class. 

I, therefore, request you to grant me leave for ten days from today.,

                                                                                                                            Yours obediently                20th September, 2022                                                                                                          X.Y.Z