Dua for Rajab and Sha'baan

During the Months of Rajab and Sha’baan, Rasulullah sallallahu alayhi wasallam used to recite the following Dua

‘O Allah, make the month of Rajab and Sha’baan blessed for us, and let us reach the month of Ramadhaan (i.e. prolong our life up to Ramadhaan so that we may benefit from its merits & blessings).’