وَيُسْتَحَبُّ فِي يَوْمِ الْأَضْحَى أَنْ يَغْتَسِلَ، وَيَتَطَيَّبَ، وَيُؤَخِّرَ الْأَكْلَ حَتَّى يَفْرُغَ مِنَ الصَّلَاةِ، وَيَتَوَجَّهَ إِلَى الْمُصَلَّى وَهُوَ يُكَبِّرُ.
Translation: On Eid al-Adha bathing, perfume, delaying food until the prayer is finished, and saying takbir while going to the musalla are recommended.
Before Fitr prayer, eating is recommended; for Adha, food is delayed until after prayer. Audible takbir on the way is among the Adha practices mentioned here.