Possible Clues:

• Convey illegally
• Adherent of religion founded by Guru Nanak
• That's not the customary way to get the mules into the country - hidden around a horse
• It's one's duty to evade it like this
• That's the way not to do your duty
• Mules do not do their duty about a geegee
• Complacent, starts to get lost and ends run
• Sticks back leg out to run
• Son, inept person making run
• Avoid duty, with receding gums and broken leg