Islamabad: President Asif Ali Zardari and Prime Minister Muhammad Shehbaz Sharif have expressed heartfelt grief and sorrow over the demise of Pakistan People's Party's former member of the National Assembly, Makhdoom Syed Ali Hassan Gilani, who passed away in a traffic accident.According to Radio Pakistan, in their separate statements, both leaders offered condolences to the family members of the late Syed Ali Hassan Gilani. They also prayed to Allah Almighty to grant eternal peace to the departed soul and grant courage to the bereaved family members to bear the loss with patience.