ثلاثٌ بهنَّ المرءُ يزدادُ قوةً

على الباهِ لا تعجَبْ بها يا ابن مُنْجِبَهْ

A man's strength grows in three ways:

When his body grows large, don't be impressed, my friend

ضخامةُ جسمٍ والرطوبةُ بعدها

وراحَةُ جسمٍ فهي للباهِ مُعْجِبَهْ

With excessive fat that follows the wetness.

It's the vigor of his body that calls for admiration.