Have a heart to help him push his cart.
"Have a heart" could mean "kindly", "please", etc.
take to heart
Sarah loved the dog with all her heart.
A congenital heart defect is a problem with the structure of the heart.
Exercise regularly for the better health of your heart.
The way to a man's heart is though his stomach.
Strenuous exercise is good for your heart.
My heart aches for you.
He miraculously survived his heart surgery.
My heart, muscles,and feet are subcutaneous.
Aerobic exercise is good for the heart.
He is benevolent with a heart of gold. - She is beautiful and she has a heart of gold.
He gave her his heart. She gave him a cold shoulder.