وَهُدُوا إِلَى الطَّيِّبِ مِنَ الْقَوْلِ
And they are guided unto goodly speech.
This is like the Ayat;
وَأُدْخِلَ الَّذِينَ ءَامَنُواْ وَعَمِلُواْ الصَّـلِحَاتِ جَنَّـتٍ تَجْرِى مِن تَحْتِهَا الَانْهَـرُ خَـلِدِينَ فِيهَا بِإِذْنِ رَبِّهِمْ تَحِيَّتُهُمْ فِيهَا سَلَـمٌ
And those who believed and did righteous deeds, will be made to enter Gardens under which rivers flow -- to dwell therein forever, with the permission of their Lord. Their greeting therein will be;"Salam (peace)!" (14;23)
جَنَّـتُ عَدْنٍ يَدْخُلُونَهَا وَمَنْ صَلَحَ مِنْ ءَابَايِهِمْ وَأَزْوَجِهِمْ وَذُرِّيَّاتِهِمْ وَالمَلَـيِكَةُ يَدْخُلُونَ عَلَيْهِمْ مِّن كُلِّ بَابٍ
سَلَـمٌ عَلَيْكُم بِمَا صَبَرْتُمْ فَنِعْمَ عُقْبَى الدَّارِ
And angels shall enter unto them from every gate (saying);"Salamun `Alaykum (peace be upon you!)", for you persevered in patience! Excellent indeed is the final home!" (13;23-24)
لَا يَسْمَعُونَ فِيهَا لَغْواً وَلَا تَأْثِيماً
إِلاَّ قِيلً سَلَـماً سَلَـماً
No evil vain talk will they hear therein, nor any sinful speech. But only the saying of, "Peace! Peace! (Salaman! Salaman!)." (56;25-26)
They will be guided to a place in which they will hear good speech.
وَيُلَقَّوْنَ فِيهَا تَحِيَّةً وَسَلَـماً
Therein they shall be met with greetings and the word of peace and respect. (25;75),
unlike the scorn which will be heaped upon the people of Hell by way of rebuke, when they are told;
ذُوقُواْ عَذَابَ الْحَرِيقِ
(Taste the torment of burning!). (22;23)
وَهُدُوا إِلَى صِرَاطِ الْحَمِيدِ
and they are guided to the path of Him Who is Worthy of all praises.
to a place in which they will give praise to their Lord for all His kindness, blessings and favors towards them, as it says in the Sahih Hadith;
إِنَّهُمْ يُلْهَمُونَ التَّسْبِيحَ وَالتَّحْمِيدَ كَمَا يُلْهَمُونَ النَّفَس
They will be inspired with words of glorification and praise, just as they are inspired with breath.
Some scholars of Tafsir said that,
the Ayah,
وَهُدُوا إِلَى الطَّيِّبِ مِنَ الْقَوْلِ
(And they are guided unto goodly speech), refers to the Qur'an;
and it was said that it means La ilaha illallah or words of remembrance prescribed in Islam.
And the Ayah;
وَهُدُوا إِلَى صِرَاطِ الْحَمِيدِ
(and they are guided to the path of Him Who is Worthy of all praises),
means, the straight path in this world.
These interpretations do not contradict that mentioned above. And Allah knows best.