 देहधर्मं गतस्यास्य परिश्रान्तस्य लक्ष्मण।अवितृप्तस्य कामेषु कामं क्षन्तुमिहार्हसि।। 
 O Lakshmana you should pardon him since he is not yet satisfied, though tired, with the struggle for the fulfilment of his sensual pleasures. 