No. It is not the question of trusting. It is only and purely business transaction to snap the matrimonial ties. If husband has apprehensions for not paying the whole money at the first instance, his apprehensions are very reasonable.
I suggest pay 1/3rd or 1/2 of the agreed amount at the time of first motion before the hon'ble court by way of A/c. payee cheque. In the petition, it shall also be recorded that if the wife does not turn up for second motion, she will return the amount with some rate of interest, immediately within one month from the date of second motion. If she does not honour this provision, the husband can recover that amount by filing recovery suit at her cost. If the husband does not turn up for second motion, he will forego the amount he paid at the time of 1st motion. Needless to say, at the time of second motion, the remaining amount has to be paid either by cash or demand draft and not by cheque as is done in the first motion,